The Houston Dynamo on Wednesday announced contract extensions for midfielders Brad Davis and Adam Moffat and goalkeepers Tally Hall and Tyler Deric. Terms of the new deals weren’t disclosed.

“All four of these players are key pieces to our team,” Dynamo president Chris Canetti said. “It’s great to know that we have them secured under contract into the future.”

Davis, Moffat and Hall are critical contributors to a Dynamo side that has won two consecutive Eastern Conference championships.

Davis, 31, had eight goals and 15 assists in league play this season and was the 2011 MLS MVP runner-up. Over the past four years he has 22 goals and 57 assists. The St. Louis-area native earned $312,000 in ’12.

Moffat, a defensive midfielder, joined the Dynamo during the ’11 season after four years with the Columbus Crew and a brief spell in Portland. He started 28 games this year and scored three goals, including a long-range blast that helped Houston get past favored Sporting Kansas City in the MLS Cup quarterfinals. Moffat, 26, earned only $59,500 this year, according to the MLS Players Union.

Hall, 27, started 39 of Houston’s 40 MLS matches in ’12 and has been the club’s first-choice netminder for the past two seasons. He made $130,000 this year.

Deric, 24, filled in for Hall during CONCACAF Champions League play and helped the club’s reserve team win its division. He is a home-grown academy player from the Houston area.